5 mm 7 mm Stainless Steel Balls | Polished Valve and Wear Part Selection Requirements
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Applicable IndustriesEnergy & MiningHardnessHRC 62 ~ 66
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MaterialStainless SteelSurfacePolished
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FeatureDurabilityFinishingPolished
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Product NameStainless Steel ballModel NumberValve Parts Ball
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Dimensions5mm/7mmDensity18.0-18.5g/cm3
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Temperature of MediaHigh TemperaturePropertyWear and Corrosion Resistance
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ColorSilver Metallic LusterConditionAccurate Grinding, Polished
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TypeMachine Parts ,Wear PartsSupply TypeOEM Service
Select polished stainless steel balls using the required 5 or 7 mm dimension and the actual part drawing.
Part identity
The title, stainless material field and stainless-ball product name consistently identify a metal component ball. Confirm the selected dimension, alloy designation and supplied condition before approving a valve or wear-part application.
Inspection requirements
Define diameter tolerance, shape and surface acceptance against the actual drawing. Listed hardness and density values require supporting test records; descriptive polishing does not provide a measured roughness or precision grade.
- Selected 5 or 7 mm size
- Verified stainless alloy
- Dimensional and shape inspection
- Surface acceptance criteria
- Actual part-use requirements
Application evidence
Review material and inspection documents before approval. Valve, high-temperature and wear-resistant wording establishes no pressure rating, temperature limit, corrosion life or guaranteed service performance.


